Home / 781,444.80-1,172,167.20-382,147.20

Finding the Fourth Proportional to 781,444.80, 1,172,167.20 and 382,147.20

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Solution

The fourth proportional to 781,444.80, 1,172,167.20 and 382,147.20 is: 573,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,444.80 : 1,172,167.20 = 382,147.20 : x
  2. Step 2: Convert to fraction form
    781,444.80/1,172,167.20 = 382,147.20/x
  3. Step 3: Cross multiply
    781,444.80x = 1,172,167.20 × 382,147.20
  4. Step 4: Simplify right side
    781,444.80x = 447,940,413,411.84
  5. Step 5: Solve for x
    x = 447,940,413,411.84/781,444.80
  6. Step 6: Final answer
    x = 573,220.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.